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Genuine Stone Information for the
Solitaire Chain Slides in this Collection

Below is information about the genuine, man-made and simulated stones offered for the items in this collection only.  The manufacturer's color description chart is shown below.  The reason we do not offer an online color chart is because they are often inaccurate.  Also included is a diagram on how round stones are measured, a conversion chart and a common treatment chart for genuine stones.  These are standard industry treatments but we feel it is important for our customers to have access to this information.  It can also be found at the Conversions & Info link on the side bar at the left.

Millimeter to Inches Conversion Chart

Millimeters 1.6mm 2.4mm 3.2mm 6.4mm 9.5mm 12.8mm

15.9mm

19.1mm

22.3mm

25.4mm

Inches

1/16"

3/32" 1/8" 1/4" 3/8" 1/2"

5/8"

3/4"

7/8"

1"

* Millimeter measurements are rounded off to the nearest 10th.

Round stones are measured from one edge to
the other (the diameter).  Two measurements
are usually provided for fancy shape stones.

Stones Offered or That May Be Available for Items in this Collection Only

Genuine Stones

Birth Month Genuine Stone  Description
January Mozambique Garnet
AA Quality
Eye clean, medium to dark red to orange brown, good cut.
GREEN Tsavorite Garnet Eye clean, light to medium dark forest green, top color, brilliance, eye clean, good cut.
February Amethyst
AA Quality
Medium/dark to dark purple, eye clean to slight imperfections, little or no color zoning, good cut.
March Aquamarine
AA Quality
Eye clean, medium light blue, good cut.
April Diamond-
SI Quality/G-I Color
 
SI Quality/G-I Color: Slightly included, small inclusions somewhat easy to see with a 10x loupe, G-I color, good cut, good polish.
 
I1 Quality/G-I Color- Inclusions can be seen with the eye, G-I color, good cut good polish.
VS Quality/G-I Color- Very slightly included, somewhat difficult to see with a 10x loupe, G-I color, good cut, good polish.
White Sapphire:
AA Quality
offered as option for April color
Near colorless (may be very slightly yellow, gray or blue); eye clean; brilliance; good cut; good polish.
May Emerald-
A Quality
A Quality:  Slightly included, medium color, good cut, good polish.
 
B Quality: Included (cloudy), light color, good cut, good polish.
AA Quality: Slightly included, medium dark, good cut, good polish.
AAA Quality: Very slightly included, medium dark to dark color, high brilliance, good cut good polish.
Chatham® Created Emerald
Gem Quality
Gem Quality: No eye visible inclusions; medium to dark green; good cut. Man made stone.
June Alexandrite
A Quality (LTD)
Always Limited Availability
Greenish Blue to Reddish-Violet color change stone... better grades have good color and good color change. Lower qualities are available (more cloudy with some color change). Good stones are scarce and more expensive. Contact us for pricing.

A Quality: Included, light green/greenish blue, weak/low color change.
 
AB Quality: Fractures break the surface; varies in color and clarity.
AA Quality: Slightly included, green/greenish blue, moderate/medium color change.
AAA Quality: Eye clean, deep green/bluish green, bright to high color change.

Color-Change Garnet
AA Quality
Eye clean, medium very slightly grayish green, moderate color change to reddish purple, good cut.
Smokey Quartz
AA Quality

offered as option for June
Eye clean, color ranges from medium-light (tan) to medium-dark (brown), good cut.
Chatham® Created Alexandrite
Gem Quality
Gem Quality: Eye clean to very minimal eye visible inclusions; medium to dark greenish blue changing to medium violet red; good cut. Man made, color- change stone depending upon lighting source.
July Ruby
A Quality
A Quality: Slightly included, medium pinkish red, good cut, good polish.
 
B Quality: Included; light pinkish red; good cut, good polish.
A+ Quality: Eye clean; medium to medium dark pinkish red; good cut good polish.
AA Quality: Eye clean, medium dark pinkish red, good cut good polish.
AAA Quality: Eye clean; medium dark pinkish red to red; brilliance; excellent cut, good polish.
Rhodolite Garnet
AA Quality

also offered as option for July color
Eye clean, medium to dark, raspberry to plum, good cut.
Chatham® Created Ruby
Gem Quality
Gem Quality: No eye visible inclusions; medium to dark blood red; good cut. Man made stone.
August Peridot
AA Quality
Eye clean, medium to dark, slightly yellowish green, good cut.
September Blue Sapphire
A Quality
A Quality: Slightly included, medium to dark navy, brilliance, good cut, good polish, little or no color zoning.
 
A+ Quality: Very slightly included; medium navy; brilliance; good cut; good polish; little or no color zoning.
AA Quality: Eye clean, medium navy to royal blue, brilliance, good cut , good polish.
AAA Quality: Eye clean, medium navy to royal blue, brilliance, excellent cut and polish.
Chatham® Created Blue Sapphire
Gem Quality
Gem Quality: Very minimal eye visible inclusions; medium to dark blue; good cut. Man-made stone.
Iolite A Quality: Eye clean; medium light to medium; grayish purple, grape color; good cut.
AA Quality: Eye clean; medium to dark grayish purple, grape color; good cut.
AAA Quality: Eye clean; very dark to vivid grayish purple, grape color; good cut.
October Pink Tourmaline
AA Quality
Eye clean, medium color, bright pink, good cut.
Green Tourmaline
A Quality
Eye clean to slight imperfections, medium to dark yellowish green (olive), good cut.
November Citrine
AA Quality
Eye clean, medium gold to slightly orange, little or no color zoning; good cut.
December Blue Zircon
AA Quality
Eye clean, medium dark, slightly greenish blue, good cut.
Tanzanite-
AA Quality
AA Quality: Eye clean; medium bluish purple; brilliance; good cut, good polish; little or no color zoning.
 
A Quality: Eye clean; medium light bluish purple; brilliance; good cut, good polish; little or no color zoning.
AAA Quality: Clean; medium dark bluish purple; brilliance; good cut and polish; no color zoning.
Gem Quality: Clean; vibrant, medium dark bluish purple; brilliance; excellent cut, good polish; no color zoning.
Swiss Blue Topaz
AA Quality
Eye clean; medium to dark, bright blue; brilliance; good cut good polish.  We describe it as more of a vivid-blue.
Sky Blue Topaz
AA Quality
Eye clean; bright light blue; good cut, good polish. We describe it as more of a pale blue.
London Blue Topaz
AA Quality
Eye clean; medium dark grayish blue; brilliance; good cut, good polish. We describe it as a more muted-blue.

 

Simulated Stones & General Color Description
Genuine stones usually are NOT the same color as simulated stones.


 

January Red (usually a bit darker than July)
February Purple
March Pale Blue
April Clear/White
May Green
June Pale Purple to Gray
July Red/Pink
August Yellow/Green
September Royal Blue
October Light Pink
November Yellow
December Medium Blue

Chatham® Lab Created Stones- Stones that are made by man.  Other "brands" of lab created stones from other manufacturer's may look similar.  Look for this name when ordering... not offered unless specifically indicated. These stones have about the same chemical make up of the genuine stone however they are made in a lab by man. They are much more expensive than the simulated stones above.  These are only approximate color descriptions.  This online colors may not be accurate on your computer monitor due to individual monitor settings.  What looks right on our computers may not look right on yours.

Actual colors will vary because of image reproduction and differences in computer monitors.

Chatham® Created
(Man-Made/Lab) Stones
(Look for the Chatham name)

General Color Description
of
Chatham® Created Stones

Gem Quality Pictured
Chatham® Created Alexandrite
  • RI: 1.746-1.755

  • Hardness: 8.5

  • Specific Gravity: 3.73

  • Species: Chrysoberyl

  • Optic Character: DR

  • Phenomena: Color Change

Gem: Eye clean to very minimal eye visible inclusions; medium to dark greenish blue changing to purple. 

Our Observations: Under florescent lighting it's more of a deep green/blue... a deep teal color.  Under incandescent lighting (a standard light bulb) it's more purple with some reddish purple.


Gem Quality Pictured
Chatham® Created Ruby
  • RI: 1.762-1.770

  • Hardness: 9

  • Specific Gravity: 4

  • Species: Synthetic Corrundum

  • Optic Character:

  • Phenomena: Asterism

Gem: No eye visible inclusions; medium to dark

Fine: Minimal eye-visible inclusions; medium to dark blood red; good cut


Gem Quality Pictured
Chatham® Created Emerald
  • RI: 1.577-1.583

  • Hardness: 7.5-8

  • Specific Gravity: 2.72

  • Species: Beryl

  • Optic Character: DR

  • Phenomena:

Fine: Minimal eye-visible inclusions; medium to dark green; good cut

Gem: No eye visible inclusions; medium to dark


Gem Quality Pictured
Chatham® Created Sapphire
  • RI: 1.762-1.770

  • Hardness: 9

  • Specific Gravity: 4

  • Species: Synthetic Corrundum

  • Optic Character: DR

  • Phenomena: Asterism

Gem: Very minimal eye visible inclusions; medium to dark blue

 

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